Traveling block



C. J. WILKINSON TRAVELING BLOCK Oct 19 1926.

Filed Dec. 12, 1922 INVENTOIR. Neva/mm J WWW/75017,

' ATTORNEYS release the Patented Oct. ,19, 1926.

UNITED STATES PATENT OFFICE.

CLEVELAND JFWILKINSOI T, 0F VENTURA, CALIFORNIA.

raavnrme Brock.

---..epp1ication filed as the provislon of a block that will not tangle with casing lines or turn over so as to hook associated with 'said block and drop any well casing carried by the block.

With the above and otherobjects in view,

the invention consists in the novel and use ful provision formation, construction and inter-relation of the various parts, members disastrous results.

and features. all as disclosed in the accompanying drawing, described in the following statement, and finally pointed out in claims.

In the drawing:

Figure 1 is a fragmentary perspective view of the improved block show n inposi- .tion of service;

Figure 2 is a fragmentary side elevation of the improved traveling block;

Figure 3 is a cross sectional view of the traveling block, taken on the line 3-3 of Figure 2, and looking in the direction of the appended arrows; and,

Figure 4 1s a fragmentary end view of a certain feature of the traveling block.

Corresponding parts in all the figures are designated by the same reference characters.

At the present time traveling blocks are so constructed that the pintle carrying the sheaves as well as securing members for the shell extend beyond the traveling block shell. Securing means are joined with the pintle so that the same may these external the shell tend to come into contact withtool 'oints and pick up the stand pipe or throw it out of position in such a manner, that one may drop through the derrick floor with It may also happen that when rope is rove' about the sheaves the block may turn over in the lines or rope due to certain'of the pipe hanging up wh ile run ning of ot er pipe into the well hole. If

not slip from the sheaves therefrom obstructions on adapted to be rove ab December 12, 1922. Serial No. 606,553.

this occurs the line may jump the groove in certain of the sheaves and wedge between the sheave and the side of-the block.cutting the line in two and thus dropping the pipe. Traveling blocks at present arelikewise constructed with bushing members between the sheaves and the pintle upon which the sheaves'run, and when the bushing members become worn they start traveling in the sheave.

I As the oiling system is usually through the pintle, traveling movement of;

the bushing will immediately render the;

oiling system of little use, with the result:

of burnt-out bushings, which at times" become so hot as to cause or necessitates shutting new bushin s or new sheaves are placed in the block. y invention tends to overcome all these faults by providinga traveling down the plant until .block in which the shellon the exterior thereof is free from obstructions, therefore preventing the pulley from'hanging up on tool joints or in any way" picking up stan pipe. My invention also contemplates the provision of means for preventing the line from becoming dislodged from any one of the sheaves and wedging as between a sheave and the shell. and therefore ill prevent the line from being cut in two. Furthermore, with my pulley block I so arrange the bushing that the same may be keyed to the sheaves and thus prevent the bushing ,from traveling independently of the sheaves. This ensures that the oiling system will at all times function.

Referring with particularity to the drawing the improved block is designated in it's entirety by A, of which a; is the shell,

a fire in the derrick,.

the line (Z;

out the sheaves, and e and f loops associated with the shell. A

for preventing jumplng of pintle or axle 9 passes through aligned openings. in sides 1 and 2 of the shell a. In this particular the sides '1- and 2 of the shell swell toward their median portions, -as illustrated at 3, and the side 2 is provided with a tapered bore or openings at-t he. enlarged or swell portion a3.-E ::.The.pintle g is provided with an enlarged end 5'which is likewise tapered to fit-gwithiu' the taper opening 4 of the side 2. ,i-The .Tside:'1.. a't the enlarged each sheave.

portion 3 is 6 adapted to receive a bolt head 7, .the screw-threaded shank 8 of said bolt head passing through an opening 9 in the side 1, and having a screw-threaded engagement with a portion of the pintle g, as illustrated at 10. The pintle g is provided with a longitudinal bore 11 and transverse bores 12 communicating with the bore 11. The shank 8 of the boltis likewise rovided with a longitudinal bore and with transverse bores 13 communicating with said longitudinal bore. The side 1 of the shell a is provided with a bore communicating with one of the transverse bores 12 in the pintle and within the bore in the shell side 1 is received a tube 14. The general direction of the bore in the shell side 1 and the position of the"tube,

14 is illustrated in Figure 2 by dotted lines. Oil may beplaced within the tube 14 and the oil will flow through the transverse bore 12 into the oil openings 13 of the bolt shank, h

and thence through the longitudinal opening in said shank into the bore 11 of the pintle and from thence through the transverse bores 12 in said pintle. This'will ensure an oiling as between itself and a series of bushing members 71. The sheaves b are directly associated'with the bushings k and keyed together. The keying arrangement with the bushings and the sheaves is illustrated in Figure 4, and said keying is accomplished by giving each bushing and each sheave at its cooperative portion a half bore, the two halves cooperating for the reception of a pin 15. As shown in Figure 4, a series of keys are arranged at difierent points be tween thebushing and the sheave. This keying is repeated for each sheave with its bushing. The bolt head 7 is curved on its exterior surface so as to be smooth and in alignment with the remaining surface of the shell side 1. The shell sides at their ends are triangular shaped as illustrated in Figure 2, and the top portion of each side cooperates in the forming of the upper loop 6, as illustrated at 16 in Figure 1. The means a for keeping rope or line rove about may consist of a plurality of spaced partitions 17 and 18 interposed between webbings 19 separating each'sheave. and the partitions 17 and 18 are maintained spaced by collars 20, the said partitions and collars being carried upon a rod or pin 21. This rod is similar in shape to the pintle 9', in that it has one end thereof enlarged and tapered as shown at 22 for reception in a correspondingly tapered bore 23 in the side 2. The other end of said rod is received in an enlarged opening 24 in the side 1, and the rod is provided with a screw-threaded bore 25 for reception of a screw-threaded shank 26 of a bolt 27. The head 28 of the bolt 27 is received within a circular recess in the side 1, as

illustrated at 29, so thatithe Q:-

provided with a circular recess terior surface of the side 1 will be free of any obstruction. The webbings 19 extend downwardly to and beyond the pintle g, as shown in Figure 3. The end- 30 of the shell a carries the swinging loop f and as before, a rod or pin 21 is carried by the sides 1 and 20f the shell a. As the opening in the shell sides and the general shape and structure of the rod issimilar to the rod just described, the same reference characters will be applied tothe end 30. However, in place of certain of the collars 20, the loop 7 is carried'by the rod 21, as illustrated at 31. In the construction shown three sheaves are provided and the middle s cer 20 is retained as between the partitions 17 and 18. The loop f is likewise provided with wing portions 32 and 33 so thatthe sides of the hook are substantially flush with the sides of the shell. The bolt heads 7 and 28 are each bored for reception of a small screw 34 aving screw-threaded engagement in the side 1 of the shell ,for the purpose of pre venting said screw from turning.

The operation of the device is no doubt obvious. owever, referring to Figure 1 the loop f will carry a pulley block hook 7c, and the loop e will have attached thereto one end of the line d. Other lengths of the line d are rove about the sheaves b, and it will be noted that if ,for any reason the pulley block should get'turned sideways the line (1' would be received as between the grooves in said sheaves and the partitions 17 and 18. which would direct the line back into the grooves of the sheaves. Furthermore, the exterior surface of the shell is free from all obstructions, so that the same may readily pass other lines and cannot be hung up on tool joints. The oiling system is positive, inasmuch as the bush 'ngs are keyed to the hubs of the sheaves so that the said bushings must at all times turn with the, sheaves.

It is obvious that various changes modifications and variations may be ma e in practicing the invention, in departure from the particular description as given, and the showing in the drawing but that said changes may be made within a fair interpretation of the invention as set forth in the .appended claims.

Having thus disclosed my invention, I claim and desire to secure by Letters Patent:

1. A traveling block including a shell, a pintle carried by said shell, and sheaves upon said pintle; said shell having one of its sidesprovided with a taper bore and the said pintle having a portlon thereof enlargedand tapered for reception in said enlarged portion said shell, said means comprising a bolt received in the opposite side of said shell, the head of which bolt is flush with the surface of said side of the shell.

2. A traveling block, including a shell, a fixed loop member at one end of said shell and flush with the outer sides of said shell,

a second loop member swingingly carried at the opposite end of said shell, said swin ing loop member being formed to have a I ush 10 surface with the outer sides of the shell.

In testimony whereof, I'have signed my name to this specification.

CLEVELAND J. WILKINSON. 

